
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <!-- import CSS -->
  <link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.15.9/theme-chalk/index.css">
  <style>
    .el-page-header__content{
      color: white;
      font-weight: bold;
    }
  </style>
</head>
<body>
<div id="app">
  <el-page-header style="background-color: #8321e5;
            color: white;line-height: 60px" @back="goBack" content="修改商品">
  </el-page-header>
  <el-card style="width: 600px;height: 800px;margin: 0 auto">
    <el-form label-width="80px">
      <el-form-item label="商品名">
        <el-input type="text" v-model="p.title"></el-input>
      </el-form-item>
      <el-form-item label="成色">
        <el-input type="text" v-model="p.fineness"></el-input>
      </el-form-item>
      <el-form-item label="单价">
        <el-input type="text" v-model="p.price"></el-input>
      </el-form-item>
      <el-form-item label="数量">
        <el-input type="text" v-model="p.num"></el-input>
      </el-form-item>
      <el-form-item label="详情">
        <el-input type="text" v-model="p.detail"></el-input>
      </el-form-item>
      <el-form-item label="商品分类">
        <el-select v-model="p.categoryId">
          <el-option v-for="c in categoryArr"
                     :label="c.name" :value="c.id"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="商品图片">
        <img :src="oldUrl" width="100" height="100" v-if="isShow" alt="">
        <el-upload
                action="/upload"
                name="pic"
                limit="1"
                list-type="picture-card"
                :on-success="handleSuccess"
                :on-preview="handlePictureCardPreview"
                :on-remove="handleRemove">
          <i class="el-icon-plus"></i>
        </el-upload>
        <el-dialog :visible.sync="dialogVisible">
          <img width="100%" :src="dialogImageUrl" alt="">
        </el-dialog>
      </el-form-item>
      <el-form-item>
        <el-button type="success" @click="update()">提交</el-button>
        <el-button type="success" @click="insert()">添加</el-button>
      </el-form-item>
    </el-form>
  </el-card>
  <div style="background-color: #8321e5;padding:30px 0;text-align: center;color: white">
    <p style="font-size: 20px">Copyright © 2017.Company name All rights reserved.</p>
  </div>

</div>
</body>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<!-- import Vue before Element -->
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<!-- import JavaScript -->
<script src="https://cdn.staticfile.org/element-ui/2.15.9/index.min.js"></script>
<script>
  let v = new Vue({
    el: '#app',
    data: function() {
      return {
        isShow:true,
        dialogImageUrl: '',
        dialogVisible: false,
        p:{
          title:"",
          price:"",
          fineness:"",
          num:"",
          detail:"",
          categoryId:"",
          url:""
        },
        categoryArr:[],
        oldUrl:""
      }
    },
    methods:{
      insert(){
        if (v.p.url==""){
          v.$message.error("请选择上传的图片!");
          return;
        }
        //发出添加商品的请求
        axios.post("/product/insert",v.p).then(function (response) {
          location.href="/admin.html";
        })

      },
      update(){
        if (v.p.url==""){
          v.$message.error("请选择上传的图片!");
          return;
        }
        //发出修改商品的请求
        axios.post("/product/update",v.p).then(function (response) {
          location.href="/admin.html";
        })

      },
      handleSuccess(response,file,fileList){
        //response代表服务器响应的图片路径
        v.p.url = response;
        v.isShow = false;
      },
      goBack(){
        history.back();//返回上一页面
      },
      handleRemove(file, fileList) {
        v.isShow = true;
        console.log(file, fileList);
        //发出删除图片的请求
        axios.get("/remove?url="+ v.p.url).then(function () {
          v.$message("服务器图片删除完成");
          v.p.url="";
        })
      },
      handlePictureCardPreview(file) {
        this.dialogImageUrl = file.url;
        this.dialogVisible = true;
      }
    },
    created:function () {
      //发请求获取分类数据
      axios.get("/category/select").then(function (response) {
        v.categoryArr = response.data;
      })
      //通过id请求需要修改的商品信息
      axios.get("/product/selectById/update"+location.search)
              .then(function (response) {
                v.p = response.data;
                v.oldUrl = v.p.url;
              })
    }
  })
</script>
</html>